1531712 has 56 divisors (see below), whose sum is σ = 3755136. Its totient is φ = 603648.

The previous prime is 1531709. The next prime is 1531721. The reversal of 1531712 is 2171351.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-2 number, since 2×1531712² = 4692283301888, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5693 + ... + 5955.

It is an arithmetic number, because the mean of its divisors is an integer number (67056).

2^1531712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1531712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1877568).

1531712 is an abundant number, since it is smaller than the sum of its proper divisors (2223424).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1531712 is a wasteful number, since it uses less digits than its factorization.

1531712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295 (or 285 counting only the distinct ones).

The product of its digits is 210, while the sum is 20.

The square root of 1531712 is about 1237.6235291881. The cubic root of 1531712 is about 115.2724980899.

The spelling of 1531712 in words is "one million, five hundred thirty-one thousand, seven hundred twelve".